ABSTRACT
This paper reviewed two types of connections between steel anchor beams and concrete pylons of cable-stayed bridges. Using 3-dimensional spring elements to simulate stud connectors, a practical cablepylon anchorage with steel brackets was analyzed by hybrid finite element method. End constraints of steel anchor beams were changed among both fixed, both slidable and fixed-slidable. Considering dead weight, cable forces and concrete shrinkage, the load transfer mechanism of connectors on the steel bracket wallboard was investigated. The results show that connectors share loads unevenly in cable-pylon composite anchorages with steel brackets and anchor beams. The connectors near the base plate of the steel brackets bear maximum uplift force of 30kN. Cable force and concrete shrinkage induced more than 80 % of the uplift and shear forces of connectors. Measures should be taken in bridge design to reduce the uplift force of connectors at the steelconcrete composite anchorage.
